Do you think global warming will have an impact on you during your lifetime? A poll of 1,000 adults asked this question. Consider the responses by age groups shown below. Response Age 18–29 30+ Yes 140 287 No 137 426 Unsure 8 2 (a) What is the probability that a respondent 18–29 years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.) (b) What is the probability that a respondent 30+ years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.) (c) For a randomly selected respondent, what is the probability that a respondent answers yes?
Do you think global warming will have an impact on you during your lifetime? A poll of 1,000 adults asked this question. Consider the responses by age groups shown below. Response Age 18–29 30+ Yes 140 287 No 137 426 Unsure 8 2 (a) What is the probability that a respondent 18–29 years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.) (b) What is the probability that a respondent 30+ years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.) (c) For a randomly selected respondent, what is the probability that a respondent answers yes?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Question
Do you think global warming will have an impact on you during your lifetime? A poll of 1,000 adults asked this question. Consider the responses by age groups shown below.
| Response | Age | |
|---|---|---|
| 18–29 | 30+ | |
| Yes | 140 | 287 |
| No | 137 | 426 |
| Unsure | 8 | 2 |
(a)
What is the probability that a respondent 18–29 years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.)
(b)
What is the probability that a respondent 30+ years of age thinks that global warming will not pose a serious threat during his/her lifetime? (Round your answer to four decimal places.)
(c)
For a randomly selected respondent, what is the probability that a respondent answers yes?
(d)
Based on the survey results, does there appear to be a difference between ages 18–29 and 30+ regarding concern over global warming?
It appears that older respondents are more concerned about global warming being a threat in their lifetime than are younger respondents.It appears that older respondents are less concerned about global warming being a threat in their lifetime than are younger respondents. It appears that older respondents and younger respondents are equally concerned about global warming being a threat in their lifetime.It appears that older respondents and younger respondents are mostly unsure about global warming being a threat in their lifetime.
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